A preparation method of multi-core optical fiber coupler based on microhole processing

A multi-core fiber, micro-hole processing technology, applied in the coupling of optical waveguides, instruments, optics, etc., to achieve the effect of increasing return loss, easy processing, and unchanged process cost and difficulty

Active Publication Date: 2018-03-09
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above defects or improvement needs of the prior art, the present invention provides a method for preparing a multi-core optical fiber coupler based on microhole processing, the purpose of which is to solve the geometric alignment problem in the preparation of a multi-core optical fiber Insertion loss due to misalignment

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  • A preparation method of multi-core optical fiber coupler based on microhole processing
  • A preparation method of multi-core optical fiber coupler based on microhole processing
  • A preparation method of multi-core optical fiber coupler based on microhole processing

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Embodiment 2

[0051] Embodiment 2 provides a kind of preferred multi-core optical fiber coupler preparation method based on microhole processing, such as Image 6 As shown, when step (4) prepares the seven-hole cylindrical quartz glass column 6, the position and diameter of the through hole are enlarged by K times, and K is a real number greater than 1;

[0052] When the processing accuracy of the through hole position is ±3.0 microns, and K is 10, the laser micro-hole processing technology is used to process the through holes. K, i.e. 450 microns, such as Image 6 The front end of the middle drawer cone 22;

[0053] The quartz glass column 6 is heated by a hydrogen-oxygen flame, and the quartz glass column 6 is tapered through a tapering platform. The length of the tapered area 21 is 5 to 20 mm, so that the diameter of the through hole in the end 20 of the tapered area formed after tapering is 20 mm. ~35 microns, and at the same time, the geometric distribution of the center of the throu...

Embodiment 3

[0054] Embodiment 3 provides a kind of preparation method of multi-core optical fiber coupler based on microhole processing. In step (7) and step (8), the multi-core optical fiber end 12 and the optical fiber bundle end 10 are respectively placed in a special fusion splicer, After the end faces of the fusion splicer are aligned, the end faces of the multi-core optical fiber end 12 and the fiber bundle end 10 are fused by arc discharge or electrothermal method;

[0055] According to the preparation method of the multi-core optical fiber coupler based on microhole processing provided by the present invention, the multi-core optical fiber is not limited to seven cores, the number of cores is at least 2, and there is no limit to the number of multi-fiber cores; the method is used to prepare the multi-core optical fiber coupler There is no restriction on the arrangement of the cores of the multi-core optical fiber, it is only necessary to arrange the cores of the multi-core optical ...

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Abstract

The invention discloses a preparation method for a multi-core optical fiber coupler based on micropore processing. The preparation method comprises the following steps: optical fiber bundle preparation, multi-core optical fiber pretreatment, optical fiber bundle sleeve and multi-core optical fiber sleeve preparation, optical fiber bundle end and multi-core optic fiber end preparation, and package in an aligned manner. Micropore processing of a cylinder sleeve is performed through a mechanical drilling or laser drilling manner to obtain the optical fiber bundle sleeve and the multi-core optical fiber sleeve; a plurality of uniform micro through holes are precisely distributed in the sleeves, etched multi-core optical fibers and etched optical fiber bundles are arranged in the micro through holes of the sleeves, and are fixed with an ultraviolet adhesive or a heat curing adhesive, end surfaces are polished through a polishing machine, alignment is realized through a six-dimensional adjustment platform, and fixing of the glass sleeves is carried out through the ultraviolet adhesive or by using a welding machine to realize welding and fixing in an aligned manner, so as to complete the preparation of the multi-core optical fiber coupler. The preparation method has the characteristics of being high in suitability, low in cost, high in accuracy and low in loss.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication and sensing, and more specifically relates to a preparation method of a multi-core optical fiber coupler based on microhole processing. Background technique [0002] In order to meet the needs of communication systems, multi-core optical fibers have been paid more and more attention because they can provide new multiplexing dimensions and greatly increase the capacity of communication systems. The multi-core optical fiber communication system needs to be integrated with the existing single-mode optical fiber communication system, which requires low-loss connection between multi-core optical fiber and single-mode optical fiber. Therefore, multi-core optical fiber couplers are particularly important. cost-critical technology. [0003] At present, there are several methods for preparing multi-core fiber couplers: [0004] Tapering method: multiple single-core optical fibers are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/26
CPCG02B6/26G02B6/262
Inventor 唐明甘霖李博睿付松年沈平
Owner HUAZHONG UNIV OF SCI & TECH
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